Fashion journalist and creator of the fabulous PRISM glasses (she is wearing the Rio in cream tortoiseshell in the photo, I think), Anna Laub. You can check out Anna's blog here and find out more about her cool glasses here.
Mmmmm given that I do actually wear "proper" glasses (i.e. I need them to see anything further than a metre away!), a pair of these would be an investment buy (as opposed to a "I just want them now" buy), no?